GENERAL HISTOLOGY

Detailed explanation-1: -The deepest layer of the meninges, the pia mater, is composed of two layers and, unlike the arachnoid, follows the contours of the sulci and gyri. The outer layer of the pia, referred to as the epipial layer, contains collagen fibers; the inner layer, or the intima pia, contains elastic and reticular fibers.

Detailed explanation-2: -The most superficial layer of the meninges is the dura mater. While it has two layers in the cranial segment, the spinal dura mater only has the deep meningeal layer.

Detailed explanation-3: -Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

Detailed explanation-4: -Dura mater: This is the outer layer, closest to your skull. Arachnoid mater: This is the middle layer. Pia mater: This is the inner layer, closest to your brain tissue.

Detailed explanation-5: -Cranial dura mater has two layers called lamellae, a superficial layer (also called the periosteal layer), which serves as the skull’s inner periosteum, called the endocranium and a deep layer called the meningeal layer.